Belt rolling machine



3 Sheets-Sheet 1.

(No Model.)

J. L, CRISP. BELT ROLLING MACHINE.

No. 452,748. Patented May'19, 189 1.

3 Shets-Sheet 2.

(No Model.) v

I. L. CRISP.

BELT ROLLING MACHINE. No. 452,748. Patented May 19,1891.

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No. 452,748. Patented May 19,1891. I

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UNITED STATES PATENT OFFICE.

JAMES L. CRISP, OF BLOOMFIELD, NEW JERSEY, ASSIGNOR OF TVO-THIRDS TOFREDERICK J. HALL AND JAMESWV. CRISP, OF SAME PLACE.

BELT-ROLLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 32,748, dated May 19,1891. Application filed February 18, 1891- $erial No. 381,906. (Nomodel.)

To aZZ whom, it may concern: so that the bed could be plainly seen andthe Be it known that 1, JAMES L. CRISP, a citizen belts inserted in themachine and moved thereof the United States, residing atBloomfield, fromwith great facility. Essex county, New Jersey, have invented cer- Theannexed drawings represent a machine tain new and useful Improvements inBelthaving a bed and rubber each six feet in 5 5 Rolling Machines, fullydescribed and reprelength, and thus adapted for finishing at a sented inthe following specification and the single operation the round beltsused upon accompanying drawings, forming a part of sewing-machines,which are between five and the same. six feet in length. to The objectof this invention is to replace Figure 1 is an end elevation of themachine; 60 hand-labor by machinery in the rolling of Fig. 2, a frontelevation without the reciproround leather belting, and the inventioncomeating devices; Fig. 3, a plan upon a larger prising an oblongbedupon which the belting scale than the other figures. Fig. 4 is an edgecan be laid, andafiat oblong rubber mounted view, and Fig. 5 a plan, ofone of the arms movably upon arms hinged at the rear of the sustainingthe rubber. bed, with means for reciprocating the bed and The frame ofthe machine is shown of wood, rubber transversely in oppositedirections. with posts A, end beams B and B, interme- By mounting therubber upon arms which are diate beams 0, front beams D, and rear beamhinged at their rear ends, I am enabled to tip E. The bed f is mountedmovably upon ways the rubber upward at a considerable angle consistingin three rods g, whichare mounted 70 with the bed, so as to permit avery free aetransversely over the front of the frame with cess tothelatter in arranging the belts thereon. their rear endsinsertedin alongitudinal plank Heretofore in machines for rolling whip-but- 7L. Ashaftb is mounted in bearingsc upon the tonsa runner withsemi-cylindrical grooves plank and the rubber r is secured movablyformed lengthwise therein has been fitted to by straps r to arms a,which are pivoted upon 7 5 slide lengthwise uponasingle arm and pressedthe shaft b. The bed f, the plank 7L, and the upon a grooved bed bymeans of a treadle. shaft 11 extend transversely to the beams 13 Inmachines for rolling whips which are of and O. The arms are providednear their front tapering or conical form a table pivoted at ends withwedges d, upon which a clamp e is one end and vibrated transversely atthe other pressed to hold the rubber down upon the bed, end has beenmounted above a verticallyand levers a secured to the rear ends of themovable bed, which could be lowered to inarms,are provided withbalance-weights u to sert and remove the whips; but in suchmacounterbalance the weight of therubber. The chines the bed is notvibrated at all. My inclamp is shown as a rod hinged by two arms 5vention diifers from both these classes of e to a pivotal bearing eattached to the ceil- 8 machines in having a bed and rubber, both ingabove the machine. The clamp is drawn reciprocated transversely to oneanother by normally backward out of the way by a cord mechanism appliedat both their opposite a and a weight 'w. A shaft z is journaled ends,and the rubber mounted upon arms upon the beams Bf, and provided atopposite 4o hinged upon their rear ends, so that the rubends with cranks7. A double-armed lever 7c her may be raised into an inclined posit-ionis pivoted upon the shaft bat each end of the above the bed, by whichconstruction the bed machine, and connected by a rod 7c with the may bemuch more effectively exposed than crank j. The arms Z Z of the lever 7care conby adjusting it vertically, as in the whip-rollnected by links atand n with the bed and 5 ing machines heretofore used. rubber,respectively, andoperate to recipro- 5 My machine is intended to operateupon a cate them in opposite directions when the considerable number ofround leather belts at shaft 2' is revolved. The shaft l is driven byonce, and no economy would be found in the a pulley m and a belt mi froma shaft and pulworking of such a machineunless the rubber ley m abovethe machine, and a tightener- 50- could be easily removed from above thebed, pulley 19, mounted upon a treadle-lever p, is

provided to press thebelt upon the pulley m at pleasure.

The bed and rubber are made of rigid materials, as slate or iron,andformed with their adjacent surfaces perfectly flat, and the round beltstarelaid upon the bed and are smoothed, hardened, and straightened bypressure and rolling beneath the vibrating rubber.

In Fi 1 the parts are all shown in full lines in their operativeposition, with the tightener-lever 1) locked beneath a pin 19 which isprovided in one of the front posts A. The clamp-rod e is shown jammedupon the wedges (Z to press the rubber toward the bed f, and rolls 5 areshown pivoted in the arms a to diminish the friction of the rubber as itis vibrated beneath the arms.

Heretofore round beltshave been rolled be-- tween plane surfaces byholding a board in the hands and rolling the belts therewith upon aflatbed; butno operator is capable of exerting sufficient pressure toactuate a long rubber, and to thus finish anything more than a shortportion of the belt at once. It has therefore been common to smooth andharden such belts and to size them by drawing them through a holein thegage-plate; but the tension required to draw them through a gageplatestretches the belt at various points, and by diminishing its diameterprevents the gageplate from polishing the belt and finishing it to thedesired degree.

I have found that with a perfectly flat bed and rubber of smoothcast-iron I can finish ten or twelve belts at once, as indicated by thedotted lines t, in Fig. 3, and that such belts are much smoother andstraighter and have a better surface than the belts finished by agage-plate.

\Vhen the belts are finished, the clamp is pushed backward to theposition indicated by dotted lines in Fig. 1,and the arms a are thenraised aboutforty-iim degrees, as shown in dotted lines, the weight ofthe rubber being counterbalanced by the weights 1.1, and thus held in anelevated position, with the bed fully exposed to remove the belts t andsupply a fresh charge. The rubber is then brought down upon the beltsand the desired pressure is produced by drawing the clamp-rod forwardupon the wedges d with the required force. The wedges, as shown in Figs.i and 5, are fitted to stand the pressure without great thickness orweight by forming them of thin plates inserted edgewise in the top ofthe arms a, and providing each with a lug d, which is fitted to across-bar a inserted through the arms. The cross-bar furnishes aconvenient means of lifting the two arms and the rubber simultaneously,being locked to the two arms by nuts a It will be not-iced that theclamp when pressed upon the front ends of the arms operates to lock themfast, so as to hold the rubber down upon the bed automatically duringthe operation of the machine. The operator is thus free to perform otherduties during the rolling of the belts, and may prepare the belts whichshall be subsequently inserted between the rubber and bed.

As solid round belts vary in diameter from three-sixteenths tothree-eighths of an inch, it is desirable at times to adjust the fulcrumof the arms a upon the shaft Z) to bring the rolls 5' into an evenbearing with the rubber 9' near its front and rear edges. The means ofadjustment is shown in Figs. 4c and 5, Fig. 4 showing the rubber incontact with belts of the smallest size, and several larger belts beingshown in dotted lines, which indicate the necessity of raising the armparallel for operating evenly upon such belts. To effect suchadjustment, each arm is provided at its rear end with a strap, whichforms a socket 4; above and below the shaft Z), and set-screws o areinserted through the strap against the top and bottom of the shaft toset the arm vertically in relation thereto. The arms are thus renderedadj ustablc at the pivot whenever it is necessary, by reason of a changein the diameter of the belts, to set the rubber vertically to and fromthe bed.

By the means described the charge or batch of belts may be finished intwo or three minutes, while it would take an operator many times longerto roll the belts by hand and the work would be less perfectly done.

The tightener for stopping and starting the machine may be replaced byany suitable clutch, as is already well known, as either would effectthe same resnltnamely, of starting and stopping the machine quickly toavoid loss of time.

In stopping the machine the operator pushes the treadle p laterally todisengage it from the pin 1')", and the weight of the tightenerpulley pthen operates to clear it from the belt m.

By inspection of Fig. 1 it will be seen that the link it stands at aconsiderable angle to the plane surface of the rubber r; but this arisesmerely from the lever it being pivoted upon the same shaft as the armsa, and is not found to operate inconveniently in practice, as thedistribution of a batch of bolts between the bed and rubber holds thesame parallel to one another, while the pressure of the rollers .9 uponthe front and rear sides of the rubber tends also to hold the sameparallel with the bed 1.

It is obvious that the double-armed lever which imparts the vibratingmotion in an opposite direction to the bed and rubber may be pivoted insuch a position that the link a would operate more nearly in line withthe rubber; but I do not make an exclusive claim to such mechanism,asthe double-armed lever has been used for similar purposes heretofore.

The rubber shown in Figs. 1 and 8 consists in an iron plate with ribs 7'upon its upper side to stiffen it, and the bed and rubber when thusconstructed may be made of the same pattern.

The arms a are shown in the drawings as if constructed of wood, with therollers s inserted in slots, and the wedge d fitted upon the wood toreceive the pressure and wear of the clamp-rod 6; but the arms may bemade of any desirable material and the clamp hinged and operated in anysuitable manner to afiect the required result.

Having thus set forth the nature of my invention, what I claim hereinis- 1. A machine adapted for rolling cylindrical belts, comprising anoblong bed supported movably upon transverse parallel ways, two or morearms projected over the bed and pivoted at their rear ends, an oblongrubber supported movably upon the arms transverse to the same, vibratinglinks attached to both ends of the bed and rubber for reciprocating themsimultaneously in opposite directions in parallel lines, and a clamppivoted to swing transversely to the rubber and arranged and operated topress upon the front end of the in parallel lines, and screws foradjusting the arms vertically upon their pivots to set the rubbervertically to and from the bed, substantially as herein set forth.

3. A machine adapted for rolling cylindrical belts, consisting in thebed f, the trans verse parallel ways supportingthe same movably, thearms a, pivoted at their rear ends and provided with balance-weights inthe rear of the pivots, the rubber r, secured movably upon the arms bystraps a", and a clamp for holding the front end of the rubber down uponthe bed, and means for reciprocating the bed and rubber transversely inopposite directions, substantially as set forth.

4. A machine adapted for rolling cylindrical belts, consisting in thebed f, the transverse parallel ways supporting the same movably, thearms a, pivoted at their rear ends and provided with balance-weights inthe rear of the pivots, the rubber r, secured movably upon the arms bystraps 0", the wedges (1 upon the front end of the arms, and the clamppivoted above the arms and provided with the cord 0 and weight w-to holdthe clamp normally backward, and means for reciprocating the bed andrubber transversely in opposite directions, substantially as herein setforth.

5. A machine adapted for rolling cylindrical belts, comprising the beamsB, the bed f,

supported transversely to the beams, the

shaft 19, mounted transversely to the beams in the rear of the bed, thearms a, pivoted upon the shaft, the rubber r, secured movably upon thearms, the levers 7o, pivoted upon each end of the shaft 1), and providedwith double arms linked, respectively, to the bed and rubber, and meansfor reciprocating the lever, as and for the purpose set forth.

6. A machine adapted for rolling cylindrical belts, consisting in theposts A, end beams B B, intermediate beams C, and front and rear beams Dand E, the bed f, and shaft I), mounted transverse to the beams B, thearms a, pivoted upon the shaft 12, and the rubber r, secured movablythereon, the driving-shaft 11, journaled upon the beams B and providedat its opposite endswith cranks j, the doublearmed levers 7c, pivotedupon the shaft 1) and connected with the bed and rubber by the links aand n, the pulley m upon the shaft 6, and the treadle-lever 1), providedwith tightening-pulley 19 adjacent to the pulley m, the whole arrangedand operated substantially as herein set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JAMES L. CRISP.

WVitnesses;

THOS. S. CRANE, L. LEE.

